System and method for protecting eye safety during operation of a fiber optic transceiver

  • US 7,162,160 B2
  • Filed: 03/09/2005
  • Issued: 01/09/2007
  • Est. Priority Date: 02/05/2001
  • Status: Expired due to Term
First Claim
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1. A method of monitoring operation of a fiber optic transceiver, comprising:

  • in a memory within a fiber optic transceiver, storing a first set of digital equivalents of a plurality of predetermined setpoints for a bias current associated with a transmitter within the fiber optic transceiver, a second set of digital equivalents of a plurality of predetermined setpoints for an output power associated with the transmitter within the fiber optic transceiver;

    acquiring, at an integrated circuit within said fiber optic transceiver, input signals associated with operation of said fiber optic transceiver, wherein the input signals include the bias current and the output power;

    comparing the bias current to each digital equivalent in the first set of digital equivalents, the output power to each digital equivalent in the second set of digital equivalents;

    determining that said input signals conflict with at least one of the first set of digital equivalents and second set of digital equivalents;

    generating an alarm flag based on said conflict; and

    storing the alarm flag in a predefined location within the memory; and

    allowing a host to read from host specified locations within the memory, including the predefined location in which the alarm flag is stored.

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